CN107812648A - A kind of lithium ion battery separator PVDF double-face spray painting system and methods - Google Patents
A kind of lithium ion battery separator PVDF double-face spray painting system and methods Download PDFInfo
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- CN107812648A CN107812648A CN201710974570.4A CN201710974570A CN107812648A CN 107812648 A CN107812648 A CN 107812648A CN 201710974570 A CN201710974570 A CN 201710974570A CN 107812648 A CN107812648 A CN 107812648A
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- roll shaft
- barrier film
- lithium ion
- ion battery
- battery separator
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Abstract
The invention discloses a kind of lithium ion battery separator PVDF double-face spray painting system and methods, aim to provide a kind of so that the overall more uniform system and methods of membrane surface coating PVDF, its drip irrigation device is, the first roll shaft for transmitting barrier film is driven by motor including porch, first roll shaft is provided with the first barrier film flush coater of the first roll shaft surface barrier film close to porch, first roll shaft is provided with second roll shaft opposite with the first roll shaft rotation direction away from the first barrier film flush coater side, threeth roll shaft consistent with the second roll shaft rotation direction is additionally provided with above second roll shaft, second roll shaft and the 3rd roll shaft are provided with the second barrier film flush coater away from the first roll shaft side, the 3rd roll shaft side is additionally provided with barrier film outlet.
Description
Technical field
The present invention relates to lithium ion battery technical field of producing, more particularly to a kind of lithium ion battery separator PVDF is double
Face paint finishing and method.
Background technology
In the structure of lithium battery, barrier film is one of crucial interior layer assembly.For lithium battery series, because electrolyte is
Organic solvent system, thus the diaphragm material of organic solvent-resistant is needed, the general polyolefin porous for using high-strength thin-film
Film.The performance of barrier film determines the interfacial structure of battery, internal resistance etc., directly affects capacity, circulation and the security performance of battery
Etc. characteristic, the barrier film of excellent performance has the function that important to the combination property for improving battery.The main function of barrier film is to make electricity
The positive and negative electrode in pond is separated, and prevents the two poles of the earth from contacting and short-circuit, additionally with can make the function that electrolyte ion passes through.Every
Membrane material is nonconducting, and its physicochemical properties has a great impact to the performance of battery.The species of battery is different, use
Barrier film is also different.For lithium battery series, because electrolyte is organic solvent system, thus the barrier film of organic solvent-resistant is needed
Material, the general polyolefin porous membrane for using high-strength thin-film.
At present, Publication No. CN106784538A Chinese patent discloses a kind of spraying system of poly-dopamine ceramic diaphragm
Preparation Method and its application in lithium ion battery, it includes the increasing of the Dopamine hydrochloride, 0~5 mass parts of 0.1~20 mass parts
Thick dose is dissolved in 75~99.In the water-based solvent of 9 mass parts, above-mentioned mixed solution is adjusted to ph and is 6~12, is sprayed on business pottery
Porcelain membrane surface is simultaneously aged, or above-mentioned mixed solution is sprayed on into commercial enamel membrane surface and is aged in alkaline atmosphere, more
The polymerization completely of bar amine obtains the poly-dopamine ceramic diaphragm.
Although the spraying preparation method of this poly-dopamine ceramic diaphragm and its application in lithium ion battery effectively carry
The high utilization rate of dopamine, but can not uniformly be applied on lithium ion battery separator surface, so as to cause to coat
The composition of layer, thickness, form generation change and then have influence on the performance of battery.
The content of the invention
It is an object of the invention to provide a kind of lithium ion battery separator PVDF double-face spray painting systems, and it has can be effectively equal
The advantages of even.
The present invention above-mentioned technical purpose technical scheme is that：
A kind of lithium ion battery separator PVDF double-face spray painting systems, including porch by motor drive for transmit barrier film first
Roll shaft, first roll shaft are provided with the first barrier film flush coater of the first roll shaft surface barrier film close to porch, and described first
Roll shaft is provided with second roll shaft opposite with the first roll shaft rotation direction away from the first barrier film flush coater side, on second roll shaft
Side is additionally provided with threeth roll shaft consistent with the second roll shaft rotation direction, and second roll shaft and the 3rd roll shaft are away from the first roll shaft one
Side is provided with the second barrier film flush coater, and the 3rd roll shaft side is additionally provided with barrier film outlet.
By using above-mentioned technical proposal, it is an important directions for improving membrane properties that membrane surface, which is modified, conventional
Method of modifying is surface coating process.Surface coating mainly deposits one layer of thin functional layer come real by coating or on film surface
Existing membrane modifying, the composition of coat, thickness, form have a great impact to the electrochemical properties of modified diaphragm, so as to have influence on
The performance of battery.By using above-mentioned paint finishing, sprayed coating does not contact with roll shaft, completes the two-sided of lithium ion battery separator
Coating, has ensured coating effect, has improved the uniformity coefficient of coating, so as to be effectively improved the performance of barrier film.
Further set：Be additionally provided between first roll shaft and the second roll shaft supply barrier film by and dry first every
Film baking oven, the second barrier film baking oven is additionally provided between the 3rd roll shaft and the barrier film outlet.
By using above-mentioned technical proposal so that barrier film flash baking is hence into the second barrier film baking oven so that overall
Roll shaft contact can be refused before barrier film is dried, and being contacted after drying with roll shaft will not cause barrier film to apply going out for uneven situation
It is existing, so as to which effectively lifting coating is uniform.
It is a further object of the present invention to provide a kind of lithium ion battery separator PVDF double-face spray painting methods, it is excellent that it has ...
Point.
The present invention above-mentioned technical purpose technical scheme is that：
A kind of lithium ion battery separator PVDF double-face spray painting methods, comprise the following steps：
D1：When barrier film is by the first roll shaft, starts the first barrier film flush coater and lithium ion battery separator A faces are coated, pass through first
Roll shaft enters the first barrier film oven for drying；
D2:Then after the upset that barrier film is completed by the second roll shaft, start the second barrier film flush coater and the B faces of barrier film are applied
Cover；
D3：The barrier film for being coated barrier film B faces enters the second barrier film oven for drying by the 3rd roll shaft, reaches barrier film outlet
In summary, the invention has the advantages that：Realized by designing roll shaft group and baking oven in an application system
The dual coating of lithium ion battery separator is completed, after the coating of lithium ion battery separator A faces, is dried by the first roll shaft into baking oven
It is dry；Then after the upset that barrier film is completed by the second roll shaft, the B faces of barrier film is coated, upper strata is entered by the 3rd roll shaft
Oven for drying.The painting method sprayed coating does not contact with roll shaft, completes the dual coating of lithium ion battery separator, has ensured painting
Cover effect.
Brief description of the drawings
Fig. 1 is lithium ion battery separator 2PVDF double-face spray painting system structure diagrams.
In figure, 1, porch；2nd, barrier film；3rd, the first roll shaft；4th, the first barrier film flush coater；5th, the second roll shaft；6th, the 3rd roller
Axle；7th, the second barrier film flush coater；8th, barrier film exports；9th, the first barrier film baking oven；10th, the second barrier film baking oven.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Embodiment 1：A kind of lithium ion battery separator 2PVDF double-face spray painting systems, as illustrated, including porch 1 by electricity
Machine drives the first roll shaft 3 for transmitting barrier film 2, and the first roll shaft 3 is provided with the surface barrier film 2 of the first roll shaft 3 close to porch 1
The flush coater of the first barrier film 2, the first roll shaft 3 away from the flush coater side of the first barrier film 2 be provided with it is opposite with the rotation direction of the first roll shaft 3
The second roll shaft 5, be additionally provided between the second roll shaft 5 and the first roll shaft 3 supply barrier film 2 by and dry the baking oven of the first barrier film 2,
The top of second roll shaft 5 is additionally provided with threeth roll shaft 6 consistent with the rotation direction of the second roll shaft 5, and the second roll shaft 5 and the 3rd roll shaft 6 are remote
The flush coater of the second barrier film 2 is provided with from the side of the first roll shaft 3, the 3rd roll shaft 6 and barrier film 2 are additionally provided with the second barrier film 2 between exporting and dried
Case, the side of the 3rd roll shaft 6 are additionally provided with barrier film 2 and exported.
It mainly includes following operating procedure：Comprise the following steps,
D1：When barrier film 2 is by the first roll shaft 3, starts the flush coater of the first barrier film 2 and PVDF materials are coated to lithium ion battery separator 2A faces
Material, coating complete metacneme 2 and enter the oven for drying of the first barrier film 2 by the first roll shaft 3；D2:Then it is complete by the second roll shaft 5
Into after the upset of barrier film 2, start the flush coater of the second barrier film 2 and the B faces of barrier film 2 are coated；D3：Be coated barrier film 2B faces every
Film 2 enters the oven for drying of the second barrier film 2 by the 3rd roll shaft 6, reaches barrier film 2 and exports.
Its operation principle is as follows：By the effect of the first roll shaft 3, the second roll shaft 5 and the 3rd roll shaft 6, by the A faces of barrier film 2
Apply first, after the completion of A faces are directly dried, so as to by the drive of the second roll shaft 5, be sprayed to the B faces of barrier film 2
Apply, and continue to dry, the material sprayed in whole process does not contact before drying with any roll shaft, so as to effectively be lifted
The uniformity coefficient of spraying, while whole design structure is simple, is relatively easy to realize, is completed using coating and roll shaft cordless
The dual coating of lithium ion battery separator 2, it is not excluded in the course of work because the factor such as tension force and procedure position, increases other
Meaning roll shaft.
The above embodiments are only explanation of the invention, and it is not limitation of the present invention, people in the art
Member can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but as long as at this
All protected in the right of invention by Patent Law.
Claims (3)
- A kind of 1. lithium ion battery separator（2）PVDF double-face spray painting systems, it is characterised in that：Including porch（1）Driven by motor Employ in transmission barrier film（2）The first roll shaft（3）, first roll shaft（3）Close to porch（1）It is provided with the first roll shaft （3）Surface barrier film（2）The first barrier film（2）Flush coater, first roll shaft（3）Away from the first barrier film（2）Flush coater side is set Have and the first roll shaft（3）The second opposite roll shaft of rotation direction（5）, second roll shaft（5）Top is additionally provided with and the second roll shaft （5）The 3rd consistent roll shaft of rotation direction（6）, second roll shaft（5）With the 3rd roll shaft（6）Away from the first roll shaft（3）Side Provided with the second barrier film（2）Flush coater, the 3rd roll shaft（6）Side is additionally provided with barrier film（2）Outlet.
- 2. lithium ion battery separator according to claim 1（2）PVDF double-face spray painting systems, it is characterised in that：Described One roll shaft（3）With the second roll shaft（5）Between be additionally provided with supply barrier film（2）By and dry the first barrier film（2）Baking oven, described Three roll shafts（6）And barrier film（2）The second barrier film is additionally provided between outlet（2）Baking oven.
- A kind of 3. lithium ion battery separator（2）PVDF double-face spray painting methods, it is characterised in that：Comprise the following steps：D1：Barrier film（2）Pass through the first roll shaft（3）When, start the first barrier film（2）Flush coater is to lithium ion battery separator（2）A faces apply Cover, pass through the first roll shaft（3）Into the first barrier film（2）Oven for drying；D2:Then the second roll shaft is passed through（5）Complete barrier film（2）Upset after, start the second barrier film（2）Flush coater is to barrier film（2） B faces be coated；D3：It is coated barrier film（2）The barrier film in B faces（2）Pass through the 3rd roll shaft（6）Into the second barrier film（2）Oven for drying, reach every Film（2）Outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710974570.4A CN107812648A (en) | 2017-10-19 | 2017-10-19 | A kind of lithium ion battery separator PVDF double-face spray painting system and methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710974570.4A CN107812648A (en) | 2017-10-19 | 2017-10-19 | A kind of lithium ion battery separator PVDF double-face spray painting system and methods |
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| CN107812648A true CN107812648A (en) | 2018-03-20 |
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| CN201710974570.4A Pending CN107812648A (en) | 2017-10-19 | 2017-10-19 | A kind of lithium ion battery separator PVDF double-face spray painting system and methods |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109332087A (en) * | 2018-08-23 | 2019-02-15 | 上海恩捷新材料科技有限公司 | A kind of lithium ion battery separator and preparation method thereof and apparatus for coating |
| CN114789103A (en) * | 2022-03-29 | 2022-07-26 | 宁德卓高新材料科技有限公司 | Online detection method for spraying thickness of diaphragm coating and coating system thereof |
| CN116493180A (en) * | 2023-06-20 | 2023-07-28 | 泰州衡川新能源材料科技有限公司 | Device and method for uniformly spraying battery diaphragm |
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| CN103691626A (en) * | 2012-09-27 | 2014-04-02 | 天津力好科技发展有限公司 | Isolated film coater |
| JP2014079708A (en) * | 2012-10-17 | 2014-05-08 | Tokyo Ohka Kogyo Co Ltd | Double-side coating device |
| CN104588262A (en) * | 2013-10-30 | 2015-05-06 | 天津力好科技发展有限公司 | Coater for diaphragm coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109332087A (en) * | 2018-08-23 | 2019-02-15 | 上海恩捷新材料科技有限公司 | A kind of lithium ion battery separator and preparation method thereof and apparatus for coating |
| CN114789103A (en) * | 2022-03-29 | 2022-07-26 | 宁德卓高新材料科技有限公司 | Online detection method for spraying thickness of diaphragm coating and coating system thereof |
| CN116493180A (en) * | 2023-06-20 | 2023-07-28 | 泰州衡川新能源材料科技有限公司 | Device and method for uniformly spraying battery diaphragm |
| CN116493180B (en) * | 2023-06-20 | 2023-09-08 | 泰州衡川新能源材料科技有限公司 | Device and method for uniformly spraying battery diaphragm |
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Application publication date: 20180320 |
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